{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:28:11.354515", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2021-Nov-22_to_2021-Nov-24_107.5_20.0"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2021110000684}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "November 22 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 24 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 63898.827128882775}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["Vietnam"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Asia", "S.E.Asia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": ["South China Sea"]}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 20.0}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 107.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "107.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 105.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 109.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 18.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 21.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-11-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[105.25, 19.5], [105.47, 20.03], [105.82, 20.18], [105.97, 20.53], [106.32, 20.68], [106.47, 21.03], [106.82, 21.18], [106.97, 21.53], [107.5, 21.75], [107.75, 21.65], [108.0, 21.75], [108.5, 21.54], [109.0, 21.75], [109.53, 21.53], [109.75, 21.0], [109.65, 20.75], [109.75, 20.5], [109.65, 20.25], [109.75, 20.0], [109.53, 19.47], [109.0, 19.25], [108.75, 19.35], [108.68, 19.32], [108.53, 18.97], [108.18, 18.82], [108.03, 18.47], [107.5, 18.25], [107.25, 18.35], [107.0, 18.25], [106.75, 18.35], [106.5, 18.25], [105.97, 18.47], [105.82, 18.82], [105.47, 18.97], [105.25, 19.5]]]]}, "2021-11-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[105.25, 19.5], [105.47, 20.03], [105.82, 20.18], [105.97, 20.53], [106.32, 20.68], [106.47, 21.03], [106.82, 21.18], [106.97, 21.53], [107.5, 21.75], [107.75, 21.65], [108.0, 21.75], [108.5, 21.54], [109.0, 21.75], [109.53, 21.53], [109.75, 21.0], [109.65, 20.75], [109.75, 20.5], [109.65, 20.25], [109.75, 20.0], [109.53, 19.47], [109.0, 19.25], [108.75, 19.35], [108.68, 19.32], [108.53, 18.97], [108.18, 18.82], [108.03, 18.47], [107.5, 18.25], [107.25, 18.35], [107.0, 18.25], [106.75, 18.35], [106.5, 18.25], [105.97, 18.47], [105.82, 18.82], [105.47, 18.97], [105.25, 19.5]]]]}, "2021-11-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[105.25, 19.5], [105.47, 20.03], [105.82, 20.18], [105.97, 20.53], [106.32, 20.68], [106.47, 21.03], [106.82, 21.18], [106.97, 21.53], [107.5, 21.75], [107.75, 21.65], [108.0, 21.75], [108.5, 21.54], [109.0, 21.75], [109.53, 21.53], [109.75, 21.0], [109.65, 20.75], [109.75, 20.5], [109.65, 20.25], [109.75, 20.0], [109.53, 19.47], [109.0, 19.25], [108.75, 19.35], [108.68, 19.32], [108.53, 18.97], [108.18, 18.82], [108.03, 18.47], [107.5, 18.25], [107.25, 18.35], [107.0, 18.25], [106.75, 18.35], [106.5, 18.25], [105.97, 18.47], [105.82, 18.82], [105.47, 18.97], [105.25, 19.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.165698258947941}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.209309098333779}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.686975801709252, 19.327822084823083, 19.91196318744602]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.579699790221582, 17.598585442462138, 18.384927086096184]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.269644279255847, -3.52596494999175, -2.8323180657537406]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.165698258947941, -3.9516231786771527, -3.1301509271374925]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7518552771743814, -1.9065624128117087, -1.5394608715123665]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9210942994049558, -2.1163203124530656, -1.7298014158504107]}}